[Bug]: Typescript compilation errors cause Jest to hang silently

[niekvandepas]

Version

28.1.0

Steps to reproduce

1. Close repo at https://github.com/NiekPas/jest-hangs.git
2. Run npm i
3. Run npm run test

Expected behavior

I expect Jest to output a compilation error or other indication that the test could not be run.

Actual behavior

Jest hangs indefinitely.

Additional context

I'm not sure if this is a jest bug or a ts-jest bug. Please let me know if I should move this issue and I will happily do so.

May be due to the use of ESM?

ts-jest version is 28.0.1.

Environment

System:
    OS: macOS 12.2.1
    CPU: (8) x64 Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
  Binaries:
    Node: 14.19.1 - ~/.nvm/versions/node/v14.19.1/bin/node
    npm: 6.14.16 - ~/.nvm/versions/node/v14.19.1/bin/npm
  npmPackages:
    jest: ^28.0.3 => 28.1.0

[mrazauskas]

Seems like ts-jest issue. The test fails as expected with this jest.config.js:

export default {
  extensionsToTreatAsEsm: [".ts"],
  transform: {},
};

There is nothing to transform in your example. Hence, a transformer should either throw an error, or do nothing and let the test fail at runtime. transform: {} makes sure that transformers are not involved and as you can see Jest reports that the test failed as expected.

[niekvandepas]

I've moved the issue to the ts-jest repo: kulshekhar/ts-jest#3507

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.